I have tryed 627 & 637.
637 is more detail, but less natural sound than 627.
627 is the best choice in my audio configuration.
I think, 637 is better if you want upgrade an standard Hifi equipement, but if you have an audiofil equipement, 6267 'll be better choice.
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The best is yet to come !
RWA Imod-ALO Vcaps and cables (jumbo cryo) -RSA Hornet - Grado GS 1000.
Predator in burning process...
waiting for ALO X cryo silver cables.
All burn'in with my greats Burn'in plugs.
Heard the sound but don't forget the Music.
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